HueComb

Yippie Ya Yellow

#f9f59f

A yellow that is muted. It is very light — it works as a page background, not as text.

Hex

#f9f59f

RGB

249, 245, 159

OKLCh

95.4% 0.107 106.0°

CIELAB (D50)

95.4, -7.7, 41.9

What is true of this colour, and of no other

  • 12 other named colours sit within ΔE00 2 of it — this part of the space is crowded, and the names here are finer distinctions than most people make.
  • It uses 64% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 0.0; on black, Lc -98.7. The sign is the polarity, which the WCAG ratio discards.
  • Built into an eleven-step scale, 10 of the 10 adjacent pairs stay ΔE00 2 apart — see the ramp.
  • All three dichromacies see it as very nearly the same colour you do: its hue is not the part carrying its identity.

Text on this colour

White text

1.13:1 — fails AA

Black text

18.59:1 — passes AA

Black text is the better of the two at18.59:1. That is enough for body text.

As text on white, it needs to change

#7f7921 is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved.

Try it against your own background

The same colour, with one cone missing

As you see it

#f9f59f

protanopia

#f5f59f · ΔE00 1.1

deuteranopia

#f6f69f · ΔE00 1.1

tritanopia

#f7f787 · ΔE00 3.8

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isPortofino at ΔE00 1.043: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

8 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.